CONFIG.md Raw History Folder

Configuration Reference

Primary format: TOML (recommended) Location: ~/.config/dumber/config.toml Also supports: JSON (.json) and YAML (.yaml) JSON Schema: ~/.config/dumber/config.schema.json (auto-generated for JSON format)

Why TOML?

TOML is the recommended format for dumber configuration because:

Clear structure: Explicit sections make complex configs easy to read and modify
No ambiguity: No whitespace sensitivity or type coercion issues
Comments supported: Add documentation directly in your config
Industry standard: Used by Cargo, Hugo, and many modern tools

You can still use JSON or YAML if you prefer - dumber automatically detects the format.

Database

Key	Type	Default	Description
`database.path`	string	`~/.local/share/dumber/dumber.db`	Database file path

History

Key	Type	Default	Valid Values	Description
`history.max_entries`	int	`10000`	> 0	Maximum number of history entries
`history.retention_period_days`	int	`365`	> 0	Days to keep history (1 year)
`history.cleanup_interval_days`	int	`1`	> 0	How often to run cleanup

Search Configuration

Key	Type	Default	Description
`default_search_engine`	string	`"https://duckduckgo.com/?q=%s"`	Default search engine URL template (must contain `%s` placeholder)
`search_shortcuts`	map	See defaults	Map of shortcut aliases to URLs

Example:

# Default search engine - used when no shortcut is specified
default_search_engine = "https://duckduckgo.com/?q=%s"

# Alternative search engines:
# default_search_engine = "https://www.google.com/search?q=%s"
# default_search_engine = "https://www.startpage.com/search?q=%s"
# default_search_engine = "https://search.brave.com/search?q=%s"

Default shortcuts (usage: !shortcut query):

# Examples:
#   !ddg golang      → DuckDuckGo search for "golang"
#   !g rust tutorial → Google search for "rust tutorial"
#   !gi cats         → Google Images search for "cats"
#   !gh opencode     → GitHub search for "opencode"
#   !yt music video  → YouTube search for "music video"

[search_shortcuts.ddg]
url = "https://duckduckgo.com/?q=%s"
description = "DuckDuckGo search"

[search_shortcuts.g]
url = "https://google.com/search?q=%s"
description = "Google Search"

[search_shortcuts.gi]
url = "https://google.com/search?tbm=isch&q=%s"
description = "Google Images"

[search_shortcuts.gh]
url = "https://github.com/search?q=%s"
description = "GitHub"

[search_shortcuts.yt]
url = "https://youtube.com/results?search_query=%s"
description = "YouTube"

Dmenu / Launcher

These settings control the dumber dmenu CLI command for rofi/fuzzel integration.

Key	Type	Default	Description
`dmenu.max_history_items`	int	`20`	Max items shown in launcher
`dmenu.show_visit_count`	bool	`true`	Show visit counts in output
`dmenu.show_last_visited`	bool	`true`	Show last visited dates in output
`dmenu.history_prefix`	string	`"🕒"`	Prefix for history items
`dmenu.shortcut_prefix`	string	`"🔍"`	Prefix for shortcuts
`dmenu.url_prefix`	string	`"🌐"`	Prefix for URLs
`dmenu.date_format`	string	`"2006-01-02 15:04"`	Go time format string
`dmenu.sort_by_visit_count`	bool	`true`	Sort by popularity

CLI Usage:

# Pipe mode (default) - outputs history for rofi/fuzzel with favicons
dumber dmenu | rofi -dmenu -show-icons -p "Browse: " | dumber dmenu --select
dumber dmenu | fuzzel --dmenu -p "Browse: " | dumber dmenu --select

# Interactive TUI mode
dumber dmenu --interactive

# Override max items via CLI flag
dumber dmenu --max 50

Omnibox

Key	Type	Default	Valid Values	Description
`omnibox.initial_behavior`	string	`"recent"`	`recent`, `most_visited`, `none`	Initial history display behavior

Example:

[omnibox]
initial_behavior = "recent"  # Show recent history when omnibox opens

# Alternative options:
# initial_behavior = "most_visited"  # Show most visited sites
# initial_behavior = "none"          # Show no initial suggestions

Logging

Key	Type	Default	Valid Values	Description
`logging.level`	string	`"info"`	`debug`, `info`, `warn`, `error`	Log level
`logging.format`	string	`"text"`	`text`, `json`	Log format
`logging.max_age`	int	`7`	>= 0	Days to keep logs
`logging.log_dir`	string	`~/.local/state/dumber/logs/`	any	Log directory
`logging.enable_file_log`	bool	`true`	-	Enable file logging
`logging.capture_console`	bool	`false`	-	Capture browser console to logs

Appearance

Key	Type	Default	Description
`appearance.sans_font`	string	`"Fira Sans"`	Sans-serif font
`appearance.serif_font`	string	`"Fira Sans"`	Serif font
`appearance.monospace_font`	string	`"Fira Code"`	Monospace font
`appearance.default_font_size`	int	`16`	Font size in points
`appearance.color_scheme`	string	`"default"`	`prefer-dark`, `prefer-light`, `default`

Color Palettes

Light palette:

[appearance.light_palette]
background = "#f8f8f8"
surface = "#f2f2f2"
surface_variant = "#ececec"
text = "#1a1a1a"
muted = "#6e6e6e"
accent = "#404040"
border = "#d2d2d2"

Dark palette:

[appearance.dark_palette]
background = "#0e0e0e"
surface = "#1a1a1a"
surface_variant = "#141414"
text = "#e4e4e4"
muted = "#848484"
accent = "#a8a8a8"
border = "#363636"

Debug Options

Key	Type	Default	Description
`debug.enable_devtools`	bool	`true`	Enable browser developer tools (F12, Inspect Element)

Rendering, UI Scale & Zoom

Key	Type	Default	Valid Values	Description
`rendering.mode`	string	`"gpu"`	`auto`, `gpu`, `cpu`	WebKit hardware acceleration policy
`rendering.disable_dmabuf_renderer`	bool	`false`	-	Disable WebKit DMA-BUF renderer (may fix flicker on Wayland; slower)
`rendering.force_compositing_mode`	bool	`false`	-	Force WebKit compositing mode (`WEBKIT_FORCE_COMPOSITING_MODE`)
`rendering.disable_compositing_mode`	bool	`false`	-	Disable WebKit compositing mode (`WEBKIT_DISABLE_COMPOSITING_MODE`)
`rendering.gsk_renderer`	string	`"vulkan"`	`auto`, `opengl`, `vulkan`, `cairo`	GTK renderer selection (`GSK_RENDERER`)
`rendering.disable_mipmaps`	bool	`false`	-	Disable GTK mipmaps (`GSK_GPU_DISABLE=mipmap`)
`rendering.prefer_gl`	bool	`false`	-	Prefer OpenGL over GLES (`GDK_DEBUG=gl-prefer-gl`)
`rendering.draw_compositing_indicators`	bool	`false`	-	Draw WebKit compositing indicators (debug)
`rendering.show_fps`	bool	`false`	-	Show WebKit FPS counter (`WEBKIT_SHOW_FPS`)
`rendering.sample_memory`	bool	`false`	-	Enable WebKit memory sampling (`WEBKIT_SAMPLE_MEMORY`)
`rendering.debug_frames`	bool	`false`	-	Enable GTK frame timing debug (`GDK_DEBUG=frames`)
`default_ui_scale`	float	`1.0`	> 0	GTK widget UI scale (1.0=100%, 2.0=200%)
`default_webpage_zoom`	float	`1.2`	> 0	Default page zoom (1.0=100%, 1.2=120%)

Workspace Configuration

Pane Mode

Key	Type	Default	Description
`workspace.pane_mode.activation_shortcut`	string	`"ctrl+p"`	Pane mode activation key
`workspace.pane_mode.timeout_ms`	int	`3000`	Pane mode timeout (ms)
`workspace.pane_mode.actions`	map	See below	Action→keys mappings

Default pane mode actions:

[workspace.pane_mode.actions]
split-right = ["arrowright", "r"]
split-left = ["arrowleft", "l"]
split-up = ["arrowup", "u"]
split-down = ["arrowdown", "d"]
stack-pane = ["s"]
close-pane = ["x"]
focus-right = ["shift+arrowright", "shift+l"]
focus-left = ["shift+arrowleft", "shift+h"]
focus-up = ["shift+arrowup", "shift+k"]
focus-down = ["shift+arrowdown", "shift+j"]
confirm = ["enter"]
cancel = ["escape"]

Note: Actions are inverted to key→action map in memory for O(1) lookup performance during navigation.

Tab Mode

Key	Type	Default	Description
`workspace.tab_mode.activation_shortcut`	string	`"ctrl+t"`	Tab mode activation key
`workspace.tab_mode.timeout_ms`	int	`3000`	Tab mode timeout (ms)
`workspace.tab_mode.actions`	map	See below	Action→keys mappings

Default tab mode actions:

[workspace.tab_mode.actions]
new-tab = ["n", "c"]
close-tab = ["x"]
next-tab = ["l", "tab"]
previous-tab = ["h", "shift+tab"]
rename-tab = ["r"]
confirm = ["enter"]
cancel = ["escape"]

Note: Actions are inverted to key→action map in memory for O(1) lookup performance during navigation.

Global Shortcuts

Key	Type	Default	Description
`workspace.shortcuts.close_pane`	string	`"ctrl+w"`	Close active pane (closes tab if last pane)
`workspace.shortcuts.next_tab`	string	`"ctrl+tab"`	Next tab shortcut
`workspace.shortcuts.previous_tab`	string	`"ctrl+shift+tab"`	Previous tab shortcut

Note: New tab creation uses modal tab mode (Ctrl+T then n/c). This follows the Zellij-style modal keyboard interface.

Key	Type	Default	Valid Values	Description
`workspace.popups.behavior`	string	`"split"`	`split`, `stacked`, `tabbed`, `windowed`	Popup opening mode
`workspace.popups.placement`	string	`"right"`	`right`, `left`, `top`, `bottom`	Split direction
`workspace.popups.open_in_new_pane`	bool	`true`	-	Open popups in workspace
`workspace.popups.follow_pane_context`	bool	`true`	-	Follow parent pane context
`workspace.popups.blank_target_behavior`	string	`"pane"`	`pane`, `tab`	`_blank` target handling
`workspace.popups.enable_smart_detection`	bool	`true`	-	Use WindowProperties for detection
`workspace.popups.oauth_auto_close`	bool	`true`	-	Auto-close OAuth popups

Workspace Styling

Key	Type	Default	Description
`workspace.styling.border_width`	int	`1`	Active pane border width (px) - overlay
`workspace.styling.border_color`	string	`"@theme_selected_bg_color"`	Active pane border color
`workspace.styling.pane_mode_border_width`	int	`4`	Pane mode border width (px) - Ctrl+P N overlay
`workspace.styling.pane_mode_border_color`	string	`"#4A90E2"`	Pane mode border color (blue)
`workspace.styling.tab_mode_border_width`	int	`4`	Tab mode border width (px) - Ctrl+P T overlay
`workspace.styling.tab_mode_border_color`	string	`"#FFA500"`	Tab mode border color (orange)
`workspace.styling.transition_duration`	int	`120`	Border transition duration (ms)

Media

Key	Type	Default	Valid Values	Description
`media.hardware_decoding`	string	`"auto"`	`auto`, `force`, `disable`	Hardware video decoding mode
`media.prefer_av1`	bool	`true`	-	Prefer AV1 codec when available
`media.show_diagnostics`	bool	`true`	-	Show media diagnostics warnings at startup
`media.force_vsync`	bool	`false`	-	Force VSync for video playback (may help with tearing)
`media.gl_rendering_mode`	string	`"auto"`	`auto`, `gles2`, `gl3`, `none`	OpenGL API selection for video rendering
`media.gstreamer_debug_level`	int	`0`	`0-5`	GStreamer debug verbosity (0=off)
`media.video_buffer_size_mb`	int	`64`	> 0	Video buffer size in MB for smoother streaming
`media.queue_buffer_time_sec`	int	`20`	> 0	Queue prebuffer time in seconds

Hardware decoding modes:

auto (recommended): Hardware preferred with software fallback - fixes Twitch Error #4000
force: Hardware only - fails if unavailable
disable: Software only - higher CPU usage

GL rendering modes:

auto (default): Let GStreamer choose the best OpenGL API
gles2: Force GLES2 (better for some mobile/embedded GPUs)
gl3: Force OpenGL 3.x desktop
none: Disable GL-based rendering

GPU auto-detection: Dumber automatically detects your GPU vendor (AMD/Intel/NVIDIA) and sets optimal VA-API driver settings:

AMD: Uses radeonsi driver
Intel: Uses iHD driver (modern, for Broadwell+)
NVIDIA: Uses nvidia driver with EGL platform

Buffering settings:

video_buffer_size_mb: Controls GStreamer buffer size. Larger buffers reduce rebuffering on bursty streams (Twitch, YouTube). Uses more memory.
queue_buffer_time_sec: Controls prebuffer duration. Higher values allow more data to be buffered ahead of playback.

Example:

[media]
hardware_decoding = "auto"    # HW preferred, SW fallback
prefer_av1 = true             # AV1 is most efficient codec
show_diagnostics = true       # Log warnings if HW accel unavailable
force_vsync = false           # Let compositor handle VSync
gl_rendering_mode = "auto"    # GStreamer picks best GL API
gstreamer_debug_level = 0     # Increase to 3-5 for debugging
video_buffer_size_mb = 64     # 64 MB buffer for smooth streaming
queue_buffer_time_sec = 20    # 20 seconds prebuffer

Diagnostics CLI:

# Check GStreamer plugins and VA-API status
dumber doctor --media

Runtime

Key	Type	Default	Description
`runtime.prefix`	string	`""`	Optional runtime prefix (e.g., `/opt/webkitgtk`) used to locate newer GTK/WebKitGTK installs

If set, dumber prepends prefix-derived paths to:

PKG_CONFIG_PATH (for version checks)
LD_LIBRARY_PATH (for runtime library loading)
GI_TYPELIB_PATH (GObject introspection)
XDG_DATA_DIRS (schemas/resources)

Example:

[runtime]
prefix = "/opt/webkitgtk"

Content Filtering

Key	Type	Default	Description
`content_filtering.enabled`	bool	`true`	Enable ad blocking
`content_filtering.auto_update`	bool	`true`	Automatically update filters

Notes:

Filter data is downloaded from bnema/ublock-webkit-filters GitHub releases.
Domain whitelist is managed via the database (content_whitelist table), not the config file.

Environment Variables

All config values can be overridden via environment variables with the prefix DUMBER_:

# Database
DUMBER_DATABASE_PATH=/custom/path/db.sqlite

# Rendering (examples)
# Defaults: rendering.disable_dmabuf_renderer=false, rendering.gsk_renderer="vulkan"
DUMBER_RENDERING_MODE=cpu
# DUMBER_RENDERING_DISABLE_DMABUF_RENDERER=true
# DUMBER_RENDERING_GSK_RENDERER=opengl
DUMBER_DEFAULT_WEBPAGE_ZOOM=1.5

# Logging
DUMBER_LOG_LEVEL=debug
DUMBER_LOG_FORMAT=json

source

1# Configuration Reference
2
3**Primary format**: TOML (recommended)
4**Location**: `~/.config/dumber/config.toml`
5**Also supports**: JSON (`.json`) and YAML (`.yaml`)
6**JSON Schema**: `~/.config/dumber/config.schema.json` (auto-generated for JSON format)
7
8## Why TOML?
9
10TOML is the recommended format for dumber configuration because:
11- **Clear structure**: Explicit sections make complex configs easy to read and modify
12- **No ambiguity**: No whitespace sensitivity or type coercion issues
13- **Comments supported**: Add documentation directly in your config
14- **Industry standard**: Used by Cargo, Hugo, and many modern tools
15
16You can still use JSON or YAML if you prefer - dumber automatically detects the format.
17
18## Database
19
20| Key | Type | Default | Description |
21|-----|------|---------|-------------|
22| `database.path` | string | `~/.local/share/dumber/dumber.db` | Database file path |
23
24## History
25
26| Key | Type | Default | Valid Values | Description |
27|-----|------|---------|--------------|-------------|
28| `history.max_entries` | int | `10000` | > 0 | Maximum number of history entries |
29| `history.retention_period_days` | int | `365` | > 0 | Days to keep history (1 year) |
30| `history.cleanup_interval_days` | int | `1` | > 0 | How often to run cleanup |
31
32## Search Configuration
33
34| Key | Type | Default | Description |
35|-----|------|---------|-------------|
36| `default_search_engine` | string | `"https://duckduckgo.com/?q=%s"` | Default search engine URL template (must contain `%s` placeholder) |
37| `search_shortcuts` | map | See defaults | Map of shortcut aliases to URLs |
38
39**Example:**
40```toml
41# Default search engine - used when no shortcut is specified
42default_search_engine = "https://duckduckgo.com/?q=%s"
43
44# Alternative search engines:
45# default_search_engine = "https://www.google.com/search?q=%s"
46# default_search_engine = "https://www.startpage.com/search?q=%s"
47# default_search_engine = "https://search.brave.com/search?q=%s"
48```
49
50**Default shortcuts (usage: `!shortcut query`):**
51```toml
52# Examples:
53#   !ddg golang      → DuckDuckGo search for "golang"
54#   !g rust tutorial → Google search for "rust tutorial"
55#   !gi cats         → Google Images search for "cats"
56#   !gh opencode     → GitHub search for "opencode"
57#   !yt music video  → YouTube search for "music video"
58
59[search_shortcuts.ddg]
60url = "https://duckduckgo.com/?q=%s"
61description = "DuckDuckGo search"
62
63[search_shortcuts.g]
64url = "https://google.com/search?q=%s"
65description = "Google Search"
66
67[search_shortcuts.gi]
68url = "https://google.com/search?tbm=isch&q=%s"
69description = "Google Images"
70
71[search_shortcuts.gh]
72url = "https://github.com/search?q=%s"
73description = "GitHub"
74
75[search_shortcuts.yt]
76url = "https://youtube.com/results?search_query=%s"
77description = "YouTube"
78```
79
80## Dmenu / Launcher
81
82These settings control the `dumber dmenu` CLI command for rofi/fuzzel integration.
83
84| Key | Type | Default | Description |
85|-----|------|---------|-------------|
86| `dmenu.max_history_items` | int | `20` | Max items shown in launcher |
87| `dmenu.show_visit_count` | bool | `true` | Show visit counts in output |
88| `dmenu.show_last_visited` | bool | `true` | Show last visited dates in output |
89| `dmenu.history_prefix` | string | `"🕒"` | Prefix for history items |
90| `dmenu.shortcut_prefix` | string | `"🔍"` | Prefix for shortcuts |
91| `dmenu.url_prefix` | string | `"🌐"` | Prefix for URLs |
92| `dmenu.date_format` | string | `"2006-01-02 15:04"` | Go time format string |
93| `dmenu.sort_by_visit_count` | bool | `true` | Sort by popularity |
94
95**CLI Usage:**
96```bash
97# Pipe mode (default) - outputs history for rofi/fuzzel with favicons
98dumber dmenu | rofi -dmenu -show-icons -p "Browse: " | dumber dmenu --select
99dumber dmenu | fuzzel --dmenu -p "Browse: " | dumber dmenu --select
100
101# Interactive TUI mode
102dumber dmenu --interactive
103
104# Override max items via CLI flag
105dumber dmenu --max 50
106```
107
108## Omnibox
109
110| Key | Type | Default | Valid Values | Description |
111|-----|------|---------|--------------|-------------|
112| `omnibox.initial_behavior` | string | `"recent"` | `recent`, `most_visited`, `none` | Initial history display behavior |
113
114**Example:**
115```toml
116[omnibox]
117initial_behavior = "recent"  # Show recent history when omnibox opens
118
119# Alternative options:
120# initial_behavior = "most_visited"  # Show most visited sites
121# initial_behavior = "none"          # Show no initial suggestions
122```
123
124## Logging
125
126| Key | Type | Default | Valid Values | Description |
127|-----|------|---------|--------------|-------------|
128| `logging.level` | string | `"info"` | `debug`, `info`, `warn`, `error` | Log level |
129| `logging.format` | string | `"text"` | `text`, `json` | Log format |
130| `logging.max_age` | int | `7` | >= 0 | Days to keep logs |
131| `logging.log_dir` | string | `~/.local/state/dumber/logs/` | any | Log directory |
132| `logging.enable_file_log` | bool | `true` | - | Enable file logging |
133| `logging.capture_console` | bool | `false` | - | Capture browser console to logs |
134
135## Appearance
136
137| Key | Type | Default | Description |
138|-----|------|---------|-------------|
139| `appearance.sans_font` | string | `"Fira Sans"` | Sans-serif font |
140| `appearance.serif_font` | string | `"Fira Sans"` | Serif font |
141| `appearance.monospace_font` | string | `"Fira Code"` | Monospace font |
142| `appearance.default_font_size` | int | `16` | Font size in points |
143| `appearance.color_scheme` | string | `"default"` | `prefer-dark`, `prefer-light`, `default` |
144
145### Color Palettes
146
147**Light palette:**
148```toml
149[appearance.light_palette]
150background = "#f8f8f8"
151surface = "#f2f2f2"
152surface_variant = "#ececec"
153text = "#1a1a1a"
154muted = "#6e6e6e"
155accent = "#404040"
156border = "#d2d2d2"
157```
158
159**Dark palette:**
160```toml
161[appearance.dark_palette]
162background = "#0e0e0e"
163surface = "#1a1a1a"
164surface_variant = "#141414"
165text = "#e4e4e4"
166muted = "#848484"
167accent = "#a8a8a8"
168border = "#363636"
169```
170
171## Debug Options
172
173| Key | Type | Default | Description |
174|-----|------|---------|-------------|
175| `debug.enable_devtools` | bool | `true` | Enable browser developer tools (F12, Inspect Element) |
176
177## Rendering, UI Scale & Zoom
178
179| Key | Type | Default | Valid Values | Description |
180|-----|------|---------|--------------|-------------|
181| `rendering.mode` | string | `"gpu"` | `auto`, `gpu`, `cpu` | WebKit hardware acceleration policy |
182| `rendering.disable_dmabuf_renderer` | bool | `false` | - | Disable WebKit DMA-BUF renderer (may fix flicker on Wayland; slower) |
183| `rendering.force_compositing_mode` | bool | `false` | - | Force WebKit compositing mode (`WEBKIT_FORCE_COMPOSITING_MODE`) |
184| `rendering.disable_compositing_mode` | bool | `false` | - | Disable WebKit compositing mode (`WEBKIT_DISABLE_COMPOSITING_MODE`) |
185| `rendering.gsk_renderer` | string | `"vulkan"` | `auto`, `opengl`, `vulkan`, `cairo` | GTK renderer selection (`GSK_RENDERER`) |
186| `rendering.disable_mipmaps` | bool | `false` | - | Disable GTK mipmaps (`GSK_GPU_DISABLE=mipmap`) |
187| `rendering.prefer_gl` | bool | `false` | - | Prefer OpenGL over GLES (`GDK_DEBUG=gl-prefer-gl`) |
188| `rendering.draw_compositing_indicators` | bool | `false` | - | Draw WebKit compositing indicators (debug) |
189| `rendering.show_fps` | bool | `false` | - | Show WebKit FPS counter (`WEBKIT_SHOW_FPS`) |
190| `rendering.sample_memory` | bool | `false` | - | Enable WebKit memory sampling (`WEBKIT_SAMPLE_MEMORY`) |
191| `rendering.debug_frames` | bool | `false` | - | Enable GTK frame timing debug (`GDK_DEBUG=frames`) |
192| `default_ui_scale` | float | `1.0` | > 0 | GTK widget UI scale (1.0=100%, 2.0=200%) |
193| `default_webpage_zoom` | float | `1.2` | > 0 | Default page zoom (1.0=100%, 1.2=120%) |
194
195## Workspace Configuration
196
197### Pane Mode
198
199| Key | Type | Default | Description |
200|-----|------|---------|-------------|
201| `workspace.pane_mode.activation_shortcut` | string | `"ctrl+p"` | Pane mode activation key |
202| `workspace.pane_mode.timeout_ms` | int | `3000` | Pane mode timeout (ms) |
203| `workspace.pane_mode.actions` | map | See below | Action→keys mappings |
204
205**Default pane mode actions:**
206```toml
207[workspace.pane_mode.actions]
208split-right = ["arrowright", "r"]
209split-left = ["arrowleft", "l"]
210split-up = ["arrowup", "u"]
211split-down = ["arrowdown", "d"]
212stack-pane = ["s"]
213close-pane = ["x"]
214focus-right = ["shift+arrowright", "shift+l"]
215focus-left = ["shift+arrowleft", "shift+h"]
216focus-up = ["shift+arrowup", "shift+k"]
217focus-down = ["shift+arrowdown", "shift+j"]
218confirm = ["enter"]
219cancel = ["escape"]
220```
221
222> **Note:** Actions are inverted to key→action map in memory for O(1) lookup performance during navigation.
223
224### Tab Mode
225
226| Key | Type | Default | Description |
227|-----|------|---------|-------------|
228| `workspace.tab_mode.activation_shortcut` | string | `"ctrl+t"` | Tab mode activation key |
229| `workspace.tab_mode.timeout_ms` | int | `3000` | Tab mode timeout (ms) |
230| `workspace.tab_mode.actions` | map | See below | Action→keys mappings |
231
232**Default tab mode actions:**
233```toml
234[workspace.tab_mode.actions]
235new-tab = ["n", "c"]
236close-tab = ["x"]
237next-tab = ["l", "tab"]
238previous-tab = ["h", "shift+tab"]
239rename-tab = ["r"]
240confirm = ["enter"]
241cancel = ["escape"]
242```
243
244> **Note:** Actions are inverted to key→action map in memory for O(1) lookup performance during navigation.
245
246### Global Shortcuts
247
248| Key | Type | Default | Description |
249|-----|------|---------|-------------|
250| `workspace.shortcuts.close_pane` | string | `"ctrl+w"` | Close active pane (closes tab if last pane) |
251| `workspace.shortcuts.next_tab` | string | `"ctrl+tab"` | Next tab shortcut |
252| `workspace.shortcuts.previous_tab` | string | `"ctrl+shift+tab"` | Previous tab shortcut |
253
254> **Note:** New tab creation uses modal tab mode (Ctrl+T then n/c). This follows the Zellij-style modal keyboard interface.
255
256### Popup Behavior
257
258| Key | Type | Default | Valid Values | Description |
259|-----|------|---------|--------------|-------------|
260| `workspace.popups.behavior` | string | `"split"` | `split`, `stacked`, `tabbed`, `windowed` | Popup opening mode |
261| `workspace.popups.placement` | string | `"right"` | `right`, `left`, `top`, `bottom` | Split direction |
262| `workspace.popups.open_in_new_pane` | bool | `true` | - | Open popups in workspace |
263| `workspace.popups.follow_pane_context` | bool | `true` | - | Follow parent pane context |
264| `workspace.popups.blank_target_behavior` | string | `"pane"` | `pane`, `tab` | `_blank` target handling |
265| `workspace.popups.enable_smart_detection` | bool | `true` | - | Use WindowProperties for detection |
266| `workspace.popups.oauth_auto_close` | bool | `true` | - | Auto-close OAuth popups |
267
268### Workspace Styling
269
270| Key | Type | Default | Description |
271|-----|------|---------|-------------|
272| `workspace.styling.border_width` | int | `1` | Active pane border width (px) - overlay |
273| `workspace.styling.border_color` | string | `"@theme_selected_bg_color"` | Active pane border color |
274| `workspace.styling.pane_mode_border_width` | int | `4` | Pane mode border width (px) - Ctrl+P N overlay |
275| `workspace.styling.pane_mode_border_color` | string | `"#4A90E2"` | Pane mode border color (blue) |
276| `workspace.styling.tab_mode_border_width` | int | `4` | Tab mode border width (px) - Ctrl+P T overlay |
277| `workspace.styling.tab_mode_border_color` | string | `"#FFA500"` | Tab mode border color (orange) |
278| `workspace.styling.transition_duration` | int | `120` | Border transition duration (ms) |
279
280## Media
281
282| Key | Type | Default | Valid Values | Description |
283|-----|------|---------|--------------|-------------|
284| `media.hardware_decoding` | string | `"auto"` | `auto`, `force`, `disable` | Hardware video decoding mode |
285| `media.prefer_av1` | bool | `true` | - | Prefer AV1 codec when available |
286| `media.show_diagnostics` | bool | `true` | - | Show media diagnostics warnings at startup |
287| `media.force_vsync` | bool | `false` | - | Force VSync for video playback (may help with tearing) |
288| `media.gl_rendering_mode` | string | `"auto"` | `auto`, `gles2`, `gl3`, `none` | OpenGL API selection for video rendering |
289| `media.gstreamer_debug_level` | int | `0` | `0-5` | GStreamer debug verbosity (0=off) |
290| `media.video_buffer_size_mb` | int | `64` | > 0 | Video buffer size in MB for smoother streaming |
291| `media.queue_buffer_time_sec` | int | `20` | > 0 | Queue prebuffer time in seconds |
292
293**Hardware decoding modes:**
294- `auto` (recommended): Hardware preferred with software fallback - fixes Twitch Error #4000
295- `force`: Hardware only - fails if unavailable
296- `disable`: Software only - higher CPU usage
297
298**GL rendering modes:**
299- `auto` (default): Let GStreamer choose the best OpenGL API
300- `gles2`: Force GLES2 (better for some mobile/embedded GPUs)
301- `gl3`: Force OpenGL 3.x desktop
302- `none`: Disable GL-based rendering
303
304**GPU auto-detection:**
305Dumber automatically detects your GPU vendor (AMD/Intel/NVIDIA) and sets optimal VA-API driver settings:
306- **AMD**: Uses `radeonsi` driver
307- **Intel**: Uses `iHD` driver (modern, for Broadwell+)
308- **NVIDIA**: Uses `nvidia` driver with EGL platform
309
310**Buffering settings:**
311- `video_buffer_size_mb`: Controls GStreamer buffer size. Larger buffers reduce rebuffering on bursty streams (Twitch, YouTube). Uses more memory.
312- `queue_buffer_time_sec`: Controls prebuffer duration. Higher values allow more data to be buffered ahead of playback.
313
314**Example:**
315```toml
316[media]
317hardware_decoding = "auto"    # HW preferred, SW fallback
318prefer_av1 = true             # AV1 is most efficient codec
319show_diagnostics = true       # Log warnings if HW accel unavailable
320force_vsync = false           # Let compositor handle VSync
321gl_rendering_mode = "auto"    # GStreamer picks best GL API
322gstreamer_debug_level = 0     # Increase to 3-5 for debugging
323video_buffer_size_mb = 64     # 64 MB buffer for smooth streaming
324queue_buffer_time_sec = 20    # 20 seconds prebuffer
325```
326
327**Diagnostics CLI:**
328```bash
329# Check GStreamer plugins and VA-API status
330dumber doctor --media
331```
332
333## Runtime
334
335| Key | Type | Default | Description |
336|-----|------|---------|-------------|
337| `runtime.prefix` | string | `""` | Optional runtime prefix (e.g., `/opt/webkitgtk`) used to locate newer GTK/WebKitGTK installs |
338
339If set, dumber prepends prefix-derived paths to:
340- `PKG_CONFIG_PATH` (for version checks)
341- `LD_LIBRARY_PATH` (for runtime library loading)
342- `GI_TYPELIB_PATH` (GObject introspection)
343- `XDG_DATA_DIRS` (schemas/resources)
344
345**Example:**
346```toml
347[runtime]
348prefix = "/opt/webkitgtk"
349```
350
351## Content Filtering
352
353| Key | Type | Default | Description |
354|-----|------|---------|-------------|
355| `content_filtering.enabled` | bool | `true` | Enable ad blocking |
356| `content_filtering.auto_update` | bool | `true` | Automatically update filters |
357
358Notes:
359- Filter data is downloaded from `bnema/ublock-webkit-filters` GitHub releases.
360- Domain whitelist is managed via the database (`content_whitelist` table), not the config file.
361
362## Environment Variables
363
364All config values can be overridden via environment variables with the prefix `DUMBER_`:
365
366```bash
367# Database
368DUMBER_DATABASE_PATH=/custom/path/db.sqlite
369
370# Rendering (examples)
371# Defaults: rendering.disable_dmabuf_renderer=false, rendering.gsk_renderer="vulkan"
372DUMBER_RENDERING_MODE=cpu
373# DUMBER_RENDERING_DISABLE_DMABUF_RENDERER=true
374# DUMBER_RENDERING_GSK_RENDERER=opengl
375DUMBER_DEFAULT_WEBPAGE_ZOOM=1.5
376
377# Logging
378DUMBER_LOG_LEVEL=debug
379DUMBER_LOG_FORMAT=json
380```

CONFIG.md RawHistoryFolder

Configuration Reference

Why TOML?

Database

History

Search Configuration

Dmenu / Launcher

Omnibox

Logging

Appearance

Color Palettes

Debug Options

Rendering, UI Scale & Zoom

Workspace Configuration

Pane Mode

Tab Mode

Global Shortcuts

Popup Behavior

Workspace Styling

Media

Runtime

Content Filtering

Environment Variables

CONFIG.md Raw History Folder